Spark Plug Cap Spring for Zenoah G230-290 G380 G450 G620 G800 - K140072121  [K140072121]

ZENOAH SPARK PLUG CAP SPRING G230-290,G380,G450,G620,G800 #140072121 (W/O PACKING) (REPLACE #505043101)
Price:
AUD$4.53
Brand:
Zenoah
Model:
K140072121
Condition:
Brand New
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Spark cap spring replacement for Zenoah G-engines

Marked with part number K140072121, this OEM-compatible spring is intended as a direct swap for the cap retention element on the listed Zenoah small gas engines. It is an accessory component used to secure the plug cap and preserve consistent contact at the ignition terminal.

Fitting takes only a few minutes for anyone experienced with basic RC engine service: remove the cap, replace the old spring with the K140072121 item, and refit the cap checking for a firm but not over-compressed fit. Standard workshop hand tools are all that is normally required.

In regular maintenance and tuning work the spring helps prevent cap movement under vibration and throttle transitions, aiding steady ignition. Replace during routine inspections or whenever caps show play or intermittent contact.

Models it fits

  • G230-290
  • G380
  • G450
  • G620
  • G800

Is this spring durable enough for off-road use?

The spring is designed for standard engine usage and will resist normal vibration. If you run exceptionally rough terrain, inspect springs more frequently and replace at the first sign of fatigue.

How does the replacement impact ignition reliability?

A fresh spring helps maintain firm contact between the cap and terminal, which reduces chances of intermittent sparks. It is a simple part that can improve day-to-day ignition consistency.

Can I reuse the old spring if it looks okay?

If the spring still holds tension and shows no corrosion or deformation you can keep using it, but swapping to a new K140072121 is recommended during routine cap servicing to avoid future issues.

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